这篇文章主要介绍了PHP实现的浏览器检查类,结合实例形式详细分析了PHP浏览器操作的相关技巧,非常简单实用,需要的朋友可以参考下

//原作者：epsilon7

//SonyMusic([email]sonymusic@163.net[/email])

class BrowserDetector {

var $UA = ""; //$HTTP_USER_AGENT的内容

var $BROWSER= "Unknown"; //浏览器类型

var $PLATFORM = "Unknown"; //操作系统

var $VERSION= ""; //浏览器版本号

var $MAJORVER = ""; //浏览器主版本号

var $MINORVER = ""; //浏览器副版本号

/* 构造函数开始 */

function BrowserDetector(){

$this->UA = getenv(HTTP_USER_AGENT);

$preparens = "";

$parens = "";

$i = strpos($this->UA,"(");

if ($i >= 0) {

$preparens = trim(substr($this->UA,0,$i));

$parens = substr($this->UA,$i+1,strlen($this->UA));

$j = strpos($parens,")");

if($j>=0) {

$parens = substr($parens,0,$j);

}

}

else {

$preparens = $this->UA;

}

$browVer = $preparens;

$token = trim(strtok($parens,";"));

while($token) {

if($token=="compatible") {

}

elseif(preg_match("/MSIE/i","$token")) {

$browVer = $token;

}

elseif(preg_match("/Opera/i","$token")) {

$browVer = $token;

}

elseif(preg_match("/X11/i","$token") || preg_match("/SunOS/i","$token") || preg_match ("/Linux/i","$token")) {

$this->PLATFORM = "Unix";

}

elseif(preg_match("/Win/i","$token")) {

$this->PLATFORM = $token;

}

elseif(preg_match("/Mac/i","$token") || preg_match("/PPC/i","$token")) {

$this->PLATFORM = $token;

}

$token = strtok(";");

}

$msieIndex = strpos($browVer,"MSIE");

if($msieIndex >= 0) {

$browVer = substr($browVer,$msieIndex,strlen($browVer));

}

$leftover = "";

if(substr($browVer,0,strlen("Mozilla")) == "Mozilla") {

$this->BROWSER = "Netscape";

$leftover=substr($browVer,strlen("Mozilla")+1,strlen($browVer));

}

elseif(substr($browVer,0,strlen("Lynx")) == "Lynx") {

$this->BROWSER = "Lynx";

$leftover=substr($browVer,strlen("Lynx")+1,strlen($browVer));

}

elseif(substr($browVer,0,strlen("MSIE")) == "MSIE") {

$this->BROWSER = "IE";

$leftover=substr($browVer,strlen("MSIE")+1,strlen($browVer));

}

elseif(substr($browVer,0,strlen("Microsoft Internet Explorer")) == "Microsoft Internet Explorer") {

$this->BROWSER = "IE";

$leftover=substr($browVer,strlen("Microsoft Internet Explorer")+1,strlen($browVer));

}

elseif(substr($browVer,0,strlen("Opera")) == "Opera") {

$this->BROWSER = "Opera";

$leftover=substr($browVer,strlen("Opera")+1,strlen($browVer));

}

$leftover = trim($leftover);

$i=strpos($leftover," ");

if($i > 0) {

$this->VERSION = substr($leftover,0,$i);

}

else {

$this->VERSION = $leftover;

}

$j = strpos($this->VERSION,".");

if($j >= 0) {

$this->MAJORVER = substr($this->VERSION,0,$j);

$this->MINORVER = substr($this->VERSION,$j+1,strlen($this->VERSION));

}

else {

$this->MAJORVER = $this->VERSION;

}

}

}

//测试程序开始

$test=new browserdetector;

echo $test->UA."
";

echo $test->BROWSER."
";

echo $test->PLATFORM."
";

echo $test->VERSION."
";

echo $test->MAJORVER."
";

echo $test->MINORVER."
";

?>

希望本文所述对大家PHP程序设计有所帮助。